Ubersaw - yes, u should probably run solemn vow but there is still clutch potential for last holds. and ive been scrimming teams that are playing invite next season and people still beef their shots on me so i can get ubersaws. and i dont know about lower divisions but in higher divisions, people dont look at me sometimes because im not the threat in some fights. if they dont kill the scout next to me, they die. this leaves their back to me sometimes for a free saw. it's not extremely common but it happens more times then moments where an amputator taunt is better then arrowing ur teammates.
Amputator - i think u completely wrong about this. i would much rather arrow my 3 teammates instead of taunting. i want to be control my character at all times. and because tf2 is so fast, i want to be able to move. this melee weapon is far worse then all the others
Solemn Vow - everything u said about it is true. it's probably the best melee weapon now, but i wouldn't say ubersaw overrated trash
Vitasaw - it is banned for a reason because it is overpowered in comp play. people use the "if the enemy medic is running it, ur own medic must run it too". that quote is way more true with the vitasaw. EDIT - it's not banned, but vitasaw is garbage, -10 hp is bad in every way possible.